Cyclone separator

Abstract

A cyclone separator has with a separation chamber in a spiral housing fitted with an inlet for the material to be separated in parallel to a tangent to the separator housing, a separate tangential inlet for a separator gas, and a longitudinal outlet arranged concentrically about the separator axis to allow the gas and fine particulate matter to pass out of the separation chamber. The separator further has a ring of vanes located in the spiral housing between the separation chamber, which is arranged coaxially to the outlet, and an outer annular space, the material inlet feeding into the separation chamber and the gas inlet feeding into the outer annular space.

I claim: 
     
       1. Cyclone separator with a stationary spiral housing, a vane ring stationarily arranged in the spiral housing, said vane ring having adjustable vanes, a separator wheel arranged coaxially within the vane ring, means for tangentially introducing crude gas and separator gas into said housing, and guide edge means for deflecting coarse particles in an end zone of a spiral flow in an annular space between the vane ring and the separator wheel, comprising (a) a first tangential inlet pipe for the introduction of material to be separated into the annular space between the vane ring and the separator wheel;   (b) a second tangential inlet pipe for the introduction of separator gas, arranged in parallel to the first inlet pipe for the introduction of the material to be separated;   (c) means for mixing the separator gas introduced through the second inlet pipe with the material to be separated, introduced through the first inlet pipe;   (d) outlet means in the form of a guide plate at an end of a flow path for the material to be separated, said guide plate being placed obliquely to the flow in the annular space between the vane ring and the separator wheel, inclined in relation to an axis of the separator and having one of its edges on the circumference of the vane ring, being attached to a wall section of the separator housing, and having another edge proximate to the separator wheel, and   (e) an outlet means for fine particulate matter, arranged concentrically in said annular space.   
     
     
       2. Cyclone separator in accordance with claim 1, wherein the angle of the guide plate to the separator axis is at least 45°. 
     
     
       3. Cyclone separator in accordance with one of the claims 1 and 2, wherein the ratio of the diameter of the vane ring to that of the separator wheel is at most 1:0.65. 
     
     
       4. Cyclone separator in accordance with one of the claims 1 and 2, wherein the ratio of the diameter of the vane ring to that of the separator wheel is 1:08. 
     
     
       5. Cyclone separator in accordance with claim 1 wherein the angle of the vanes of the vane ring to a tangent to the circumference of the vane ring is 25°. 
     
     
       6. Process for separating course material and fine material in a gas comprising injecting said gas with said material into a cyclone separator having a stationary spiral housing, a vane ring stationarily arranged in the spiral housing, said vane ring having adjustable vanes, a separator wheel arranged coaxially within the vane ring, means for tangentially introducing said gas with said material and a separator gas into said housing, and guide edge means for deflecting coarse particles in an end zone of a spiral flow in an annular space between the vane ring and the separator wheel, said separator comprising   (a) a first tangential inlet pipe for the introduction of material to be separated into the annular space between the vane ring and the separator wheel;   (b) a second tangential inlet pipe for the introduction of separator gas, arranged in parallel to the first inlet pipe for the introduction of the material to be separated;   (c) means for mixing the separator gas introduced through the second inlet pipe With the material to be separated, introduced through the first inlet pipe;   (d) material outlet means in the form of a guide plate at the end of a flow path for the material to be separated, said guide plate being placed obliquely to the flow in the annular space between the vane ring and the separator wheel, inclined in relation to an axis of the separator and having one of its edges on the circumference of the vane ring, being attached to a wall section of the separator housing, and having another edge proximate to the separator wheel, and   (e) outlet means for fine particulate matter, arranged concentrically in said annular space.